Rolling-mill.



Patented Aug. 6, I90].

R. H; SNYDER. BQLLING 'IILL. (Application filed Jan. 21, 1901.)

(No Model.)

(t-masses. EQ.J(.YWM. ii. I

UNITED STATES PATENT OFFICE.

ROBERT I-l. SNYDER, OF WORCESTER, MASSACHUSETTS.

ROLLING-MILL.

SPECIFICATION forming part of Letters Patent No. 679,919, dated August 6, 1901'.

Application filed January 21, 1901. $erial No. 44,068. (No model.)

To all whom, it may concern.- I Be it known that 1, ROBERT H. SNYDER, of the city and county of Worcester, in the State of Massachusetts, have invented certain new and useful Improvements in Rolling-Mills; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, forming a part of this specification, in which Figure 1 represents a plan, partly in section, of part of a bloom-rolling mill embodying myimprovements. Fig. 2 is a vertical longitudinal section therethrough taken on line at as, Fig. 1. Fig. 3 is a vertical transverse section taken on line 00'' m, Fig. 1; and Fig. 4=is an enlarged vertical transverse section taken at the point indicatedbyline 56 Fig. 1,'showing the parts to which myinvention more particularly relate, as hereinafter more fully described.

The operation of rolling the ingots to the size of blooms is performed, as is well known, by passing said ingots back and forth longitudinally between the reducing-rolls, the in gots being turned one-fourth of a revolution by suitable automatic manipulators after each forward movement thereof preparatory to being passed back between said reducingrolls for each succeeding reduction. During the first stages of reduction and until the ingot has been reduced to nearly the finished size the manipulators readily and properly turn it by catching under and raising one corner, which causes it to be turned onefourth of a revolution, as aforesaid, and thus brings the opposite right-angle sides in position to come in contact with the reducingrolls at the next passage therethrough, as usual; but when the reducing process has been nearly completed and the stock rolled down tonearly the finished size, preparatory to feeding it from the rolling-mill, more exactness is required of the manipulators in catching under and turning the same on account of its smallerdiameter, said manipulators being liable to come under the center instead of the edge of the ingot, and therefore lifting without turning it.

Heretofore it has been necessary for the attendants to assist the manipulators in turning the partially-reduced ingots by means of be diificult to properly turn it by merely lifting one edge by means of the manipulators,

as aforesaid. providing means for holding down the ingot upon the side opposite from that upon which the manipulators act to lift and turn the same.

My invention consists in combining a series of projections or lugs with the inner vertical side of one of the stationary horizontal longitudinal side plates over the ends of the car-' rying-rolls of the mill for the purpose above described.

To enable others skilled in the art to which my invention appertains to better understand the nature and purpose thereof, I will now proceed to describe it more in detail.

In the drawings, A A represent a pair of reducing-rolls, the parts B a series of carrying-rolls, and O C the stationary horizontal longitudinal side plates above alluded to, upon the inner vertical side of one of which the aforesaid projections or lugs D are formed or secured, in this instance the same being shown riveted thereto. The parts E represent the usual automatic manipulators,which have both vertical and horizontal movements imparted thereto by connection with suitable mechanism. (Not shown.) The purpose of said manipulators, it will be understood, is to lift and turn and also to move the ingots laterally, as required, to bring them in line and also into the proper position for them to be passed between the reducing-rolls after each passage therethrough and preparatory to the next passage between the same.

Assuming that an ingot has passed out from between the reducing-rolls A A onto the carrying rolls B, the manipulators are then caused to be operated, all being operated together. They are first moved into position to bring one corner a of one of theforked upper ends E under one edge of the bottom of said ingot. The manipulators are then ele- I accomplish said result by" sarily be turned or tipped overone-fourth whatwas its inner-vertical side, at the top the partially-reduced ingot G, as is shown.

or lugs D on the stationary side plates the orally in alinement with the proper place on the reducing-rolls for them to next operate upon it,-after which it is passed longitudinally, as usual, between said rolls to reduce it in size, and so on,alternately operatingu pon said ingot until 'it is reduced to the desired size. After it has been reduced to so small a size as to make it difficult to readily and properly turn it by means of the manipulators alone, as above described, said opera: tion may then be facilitated by means of the projections or lugs D on the inner vertical face of oneof the longitudinal side plates 0, previously described. In turningthepartially-reduced ingot by the assistance of said projections or lugs it is first moved laterally, so as to bringthe outer upper edge thereof under-the projections or lugs, as is. indicated by dotted lines F in Fig. 1. The manipulators are then adjusted to bring the corneraunder theinner bottom corner thereof and elevated, thereby raising that side of in Fig. 4, and as its diagonally-opposite corner is held down by the projections or lugs D, as above described, said bloom must necesof a revolvtion, or, in other words, to bring and its outer vertical side at the bottom. Having been thus turned, the manipulators are then operated to move it laterally into line for the next reductiomas also previously described.

By the use of said projections operation of turning the ingot, it is obvious, is made positively certain, as it cannot be elevated without turning it; (lonsiderable time is thus saved in the manipulation of the ingots in the process of reduction. This result has been fully demonstrated in practice in the manufacture of thousands of tons of bloomsor slabs.

While my invention is very simple in construction and operation, the result thereby produced is of great importance in the manufacture of blooms, as a large saving is thereby effected not only in labor but expense in the manufacture of said product.

I have shown the projections or lugs D on only one of the side plates 0; but it will of course be understood'that they may be used upon both sides of the mill, if desired. To facilitate the operation of turning the ingot in case the forked ends ofthe manipulators do not catch'under the bottom edge thereof, the outer side of said forked end may beprm vided with atoothed or serrated edge I), as is shown in Figs. 3 and 4. r

Having now described my invention, wha I claim therein as new, and desire to secure by LettersPatent, is+

;In a rolling-mill, the combination withthe stationary, horizontal,longitudinal side plate over the'carrying-rolls, of a series of projections or lugs arranged in a horizontal line upon the inner,vertical face of said side plate,

for holding the outer, upper corner of the in got in turning it bymeans of the usualmanipulators,'substantially as set forth.

' ROBhlltlll SNYDER.

Witnesses:

"A. A. BARKER,- .W. B. NoURsE. 

